Steels comparison

[hydorah]

Partially

I've got an opinion either side of this one

Cable pinch bolts only need to 'pinch' the cable

They are only small typically M5, 5mm hex key driving a bolt with 7mm cap

They do screw into aluminium, if your putting a lot of torque into then you're over doing it

- Recommended torque setting is approx 50 -60 inch pounds or 5-6 lb/ft

- As opposed to 80-90 for a pivot (plus the stress endured in operation)

But I still don't use aluminium on the brake ones, but I do on the gear ones

My opinion is this one's borderline, in my super technical coin-toss, safety critical for sure, but not really high torque

I'd maybe use aluminium here if I had some good reason to, but not had that good reason

I just stick with what I know will work fine, not died yet!

 

[WD Pro]

A factor with the cable clamp bolt is the force is only on one side of the head so it is also put under a bending load, something the female part will cope far better with than the male :?

WD

 

[hydorah]

A factor with the cable clamp bolt is the force is only on one side of the head so it is also put under a bending load, something the female part will cope far better with than the male :?

WD

Good point

The plate will help with (the top of the arm and underside of the plate are notched) but this but still a factor - has to be or the cable pinch bolt assembly wouldn't pinch!

Of course if you want colour or weight weenie-ness here you could just use titanium and not have the worry...

 

[marin man]

Just as an asid,the brake posts and the cable bolts and the pad clamp bolts and the mounting hardwear on the kcnc vb1 are all aluminium and I didnt die using them

BUT they are a far superior alloy than most cosmetic bolts......and hard anodized as well.... :?

 

[hydorah]

What no Lawsuit?

I'll bet they are 7005 series heat treated

 

[marin man]

I would think so as they are SUPER hard :shock:

 

[hydorah]

Could be other stuff

Could also be 7075 or scandium or titanium...

Looks like either is listed in the specs depending on which bit you're looking at!

http://www.kcnc.com.tw/Web/NewWeb/mtbbrake.htm

http://www.kcnc.com.tw/Web/NewWeb/mtbvbrake2.htm

Cool looking stuff though innit!

 

[marin man]

yep really well put togehter but the brakes are not greatly powerful.....levers are fantastic though